/**
 * Copyright (C) 2013 The CyanogenMod Project
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.whispersystems.whisperpush.ui;

import android.app.ListActivity;
import android.app.LoaderManager;
import android.content.Context;
import android.content.Intent;
import android.content.Loader;
import android.database.Cursor;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.CursorAdapter;
import android.widget.ListView;

import org.whispersystems.whisperpush.R;
import org.whispersystems.whisperpush.database.DatabaseFactory;
import org.whispersystems.whisperpush.database.PendingApprovalDatabase;
import org.whispersystems.whisperpush.loaders.PendingLoader;

public class VerifyIdentitiesActivity extends ListActivity
    implements LoaderManager.LoaderCallbacks<Cursor>
{

  @Override
  public void onCreate(Bundle bundle) {
    super.onCreate(bundle);
    getActionBar().setDisplayHomeAsUpEnabled(true);
    setContentView(R.layout.verify_identities_activity);

    initializeListAdapter();
    getLoaderManager().initLoader(0, null, this);
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
      case android.R.id.home: finish(); return true;
    }

    return false;
  }

  @Override
  public void onListItemClick(ListView listView, View view, int position, long id) {
    Intent viewIntent = new Intent(this, VerifyIdentityActivity.class);
    viewIntent.putExtra("identity_key", ((PendingIdentityItemView)view).getIdentityKey());
    viewIntent.putExtra("contact", ((PendingIdentityItemView)view).getContact());
    startActivity(viewIntent);
  }

  private void initializeListAdapter() {
    this.setListAdapter(new PendingListAdapter(this, null));
    getLoaderManager().restartLoader(0, null, this);
  }

  @Override
  public Loader<Cursor> onCreateLoader(int id, Bundle args) {
    return new PendingLoader(this);
  }

  @Override
  public void onLoadFinished(Loader<Cursor> loader, Cursor cursor) {
    ((CursorAdapter)getListAdapter()).changeCursor(cursor);
  }

  @Override
  public void onLoaderReset(Loader<Cursor> loader) {
    ((CursorAdapter)getListAdapter()).changeCursor(null);
  }

  private class PendingListAdapter extends CursorAdapter {
    private final LayoutInflater inflater;

    public PendingListAdapter(Context context, Cursor cursor) {
      super(context, cursor);
      this.inflater = LayoutInflater.from(context);
    }

    @Override
    public void bindView(View view, Context context, Cursor cursor) {
      PendingApprovalDatabase.Reader reader = DatabaseFactory.getPendingApprovalDatabase(context)
                                                             .readerFor(cursor);

      ((PendingIdentityItemView)view).set(reader.getCurrent());
    }

    @Override
    public View newView(Context context, Cursor cursor, ViewGroup parent) {
      return inflater.inflate(R.layout.pending_identity_item_view, parent, false);
    }
  }
}